This is the most amaizing mod for M54! No oil consumption and no noticiable side effects! It is so nice not to worry about hydrolocking the engine in cold weather and adding oil multiple times between oil changes. My OCI - 6.5 - 7.5K.

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2012 X5 x35i My new toy
2005 X5 4.4 Her's (Retrofitted Servotronic Steering Rack)
2003 X5 3.0 Mine (Retrofitted Servotronic Steering Rack and Heated Steering Wheel)
2001 M5 Son's car
2000 540i 6sp Sports pkg, supercharged. Son's car (Sold)
2001 530i (Sold)
1999 528i (Sold)
1975 2002 (Sold)